John p



J. P. DOHAU.

v HUB JACK.

APPLICATION FILED MAR. 1I, 1920.

Patented Aug. 10,-19212.

cfa/1n ora/u.

machine.

JoHN r. nofaAm'or Norvrrr Form D I'ILAQWKIsCoNsIN. .l

' Application 'filed March 1i,

Toall whom/army concern; k-

f Beit known that LVJQHN P.' Donau, a" citizen of the United States, residing 'ati' North Fond du Lac, in the4 county of Fond du Lac and State of Wisconsin, have .inf vented certain new and .useful Improve-'f ments in Hub-Jacks; and Idodeclare thel following tobea full, clear, and exact description of Vthe invention, lsuch as willl en-l able others skilledrin the art to which itappertains to make and use the same.-

My invention relateslto yjacks anidwmore particularly "to those intended primarily for engagement with hubs of `automobiles for relieving 'the tires ofthe Weight ofthe yOn@J objectief the inventionisto provide, a simple and inexpensive device embodying a lever, a lifting arm, and 4novel'meansEforf; hinging the :two together in l 'a` manner to 'p permit adjustment for cars havingwheels of different diameters. v f x Another objectj i'sf to* provide an effective cushion for the lifting arm to .prevent marring of the wheels thereby. f l/Vith the foregoing in View, the invenf tion resides in the ynovel construction of".

parts hereinafter fully `rdescribed kand claimed.

Figure 1 ofthe accompanying drawings is a side elevation of a jack applied to the. hub of an automobile Wheel, before lifting the machine. A

Fig. 2 is a view similar tofFig.; 1 but showing the wheel elevated yby the'jack. v

,Fig 3 is a horizontal sectionon the plane of line 3--3 of Fig.r 1. t

Fig. 4 is a Vvertical section as indicated by line 4*-1 of Fig. 1.

Fig. 5 is aperspective view of the re-y versible plate carried bythe lever and in. f turn carrying the pivot of the lifting arm. Figs. 6 and 7 are respectively a side ele-f vation and a vertical section of the cushion@ of the lifting arm, the later View being Vcuty on the line 7 7 of Fig. 6. v y

Fig. 8 is a detail perspective showing a.; different form ofcushionf' which may be used if desired. A f' In the drawings abovebrielly'fdescribed,' the numeral lfdesignates Ka hand lever hav# ing its fulcrum 2 located at one end,` while a short distance in rear of said` fulcrum,the lever is provided with'a ytransversejgroove 3 whose opposite sides form thrustpshoul Specification of Letterslvatent.

1920. f'SeriarNO. 364,934.

der@ @acting 'with nb Efr ther@ Suit; ablej thrust means carried. yby, a yreversible plate l yvwhich isk secured-by screws or 4the hke lto the lever. vPlate 5,."as shown, 'l is provided withlspaced flanges 7 ycarryingg-a vr60.1 A'

pivotpinor they like' -8 by ymeans of which 'the' loadfliftingarm 9 is pivotallyconnected y i y vwithA thelever 1. ByK/,reference more -particularly tof, Figs.-1 an'df2,it will be seen `thattherib .4Lk is laterallyioffset. from the aXisof the pivot v8. Thisis done,1in orderV f that by reversingthe plate 5. upon thelever krl, the distanceof the pivot from the yfillsV Crum,y 2,1 may be varied, 'for adapting the jacky foruse inconnectionwith wheels ofqo f relativelyfsmall and large diameters. Whenv l -thefplate y5 *isLk `positioned as sh own'`i1'i`Figs-.if1a1 'rcll 2 rthejj ackis. adj usted. for use in y.conf nection with comparatively g large wheels,s since? the v pivot 8 f is then located a consider- 75 able kdistance f-rom'the fulcrum 2,fbut rwhen the; screws G'arefremoved, ythe plate f5. rel l versed,` and-the" rib 'againpositioned inthe groove'rr, the`aforesaid pivot risflocated much closery to the yfulcru'm 2 and`v thus thego fliftin'g-arm 9.y maybe placed kunder the hubs vof smaller wheels.

- j f Secured top thefree. end of the arm 9,'isg f the shank 10r of'4 a substantially 'lf-shaped l l Vplate whose'he'ad 11 fisbent later-all ,aroundV V85A `the end of'saidarmas shown' c earlyin "Figsy 6K4 and 7. A,The-ends' of the head` 11" are bent laterally into parallelrelation to yform a pair of ears 12 betweenl which a suitable cushion'li'is mounted, said 'cushion 9o ybeing ypreferably in,k the form of va roller havinga bushing Llet through which a rivet f OrfV the like 15y passes, the ylatterhaving its @ends upsetin openings jin the ears 12. It is' tobe observed that V,the buffer yor cushion 95 `18y is of rgreater diameter than` the thickness) f of the lifting-arm 9. Itis thus impossible for any parts of this arm to strike theve; hiclewheel andpossibly mar they same.` t c t ,ji -vIn Fig. 8,1 have shownganother form of buffer or vcushion which may bensed-if fden y 1 siredff; Infthis figurethe free end of the f `far`1nf9 is roundedas indic'atedfatl andthe opposite sidesof said arm" are provided .Withf Y .shallowvgrooves 17 yadjacent said'V rounded 105' end, 1A. vstrip of leather gortrubberl 18 y is .passed "around the-rounded end 16 and has'y its endsps'ecured intheshallow grooves 17 y, by tacks or'tvother appropriate fasteners .19. -Herejagain,the proportion of parts" is such`y @renewing-,10;1920.1

wheel.

In use, with the lever l horizontal or Vsubas to prevent either the armV 9 or the fasteners 19 from the-load-is raised. Whenever desirable. the

plate. 5 may be reversed, for adapting the jack to wheels and the ylike of ldifferent sizes a and for the lifting the load a greater or 1 Vliable andin every way desirable.

v probably the bestk results may be obtained 2,5 by the several features described and shown,

lesser distance. Furthermore, by varying the position ofthe plate 5, the leverage may be varied .for lifting carsfof dilferent weight.

All features of construction employed are simple.andinexpensive and hence the jack may be. advantageously manufactured and marketed. VRegardless of these characteristi'cs however the device 1s eflicient and re- Since these.V details are preferably followed, but within the scopeof the invention as claimed` considerable latitudeis allowed for making suchv minor vchanges asoccasion may dictate.

I claim: .11 .`Y A jackcomprisng va lever-having its fulcrum vat `one end,` said lever having thrust means, a plate carrying a pivot and having coming in contact with the thrust means offset laterally from the pivotal axis and engageable with the thrust means of said lever, said .plate being reversible to locate said pivot at either of two distances from the fulcrum when the afore- Asaid thrust means are engaged, means for securing said plate to said lever 1n eitherl of its positions, and a lifting-arm mounted on said pivot. l

2. A jack comprising a lever having its fulcrum at one end and provided Vwith a transverse' groove ata point spaced from said end, a plate having at'spaced points a rib and a pivot, said plate being reversible to locate said pivot at either of twodistances from the fulcrum when said rib is received in said groove, means for securing the plate to said lever inl either of its two positions, and alifting-arm mounted on the aforesaid pivot.

3. A jackincluding a 'lifting-arm, a T- sliaped metal plate having its shank secured to one side of said armnear the end thereof, the head of said platebeing'bent laterally onto the end of said arm, the ends of said head being bent into parallel relation to forni ears, and a buing device mounted between said ears to engage the object to be lifted.V

my hand; Y

JoriN r. Dorian. 

